Indium Tin Oxide (ITO) substrates were functionalized with the following FAS: 2,2,3,3,4,4,5,5,6,6,6-undecafluoro-N-[3-(trimethoxysilyl)propyl]hexanamide (RF = C5F11), containing an embedded amide between the perfluoroalkyl chain and the syloxanic moiety, and the 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyltriethoxysilane (RF = C6F13), with the perfluoroalkyl group linked to the syloxanic moiety through a simple hydrocarbon chain. Subsequently, the obtained systems were functionalized with Au nanoparticles (AuNPs) by immersion into a solution of citrate-stabilized AuNPs. All the samples have been characterized by FE-SEM and XPS. Moreover, the wetting behaviour, as well as the resistivity to a charge transfer of the different surfaces before and after AuNPs depositions, have been investigated. Finally, the application of such systems as catalysts for methanol electro-oxidation under alkaline conditions has been investigated, revealing the synergic role played by FAS and AuNPs in promoting a remarkable electrocatalytic activity
Mignani, A., Ballarin, B., Barreca, D., Cassani, M.C., Carraro, G., Maccato, C., et al. (2015). Gold Nanoparticles-Decorated Fluoroalkilsilane Nano-Assemblies for Electrocatalytic Applications.
Gold Nanoparticles-Decorated Fluoroalkilsilane Nano-Assemblies for Electrocatalytic Applications
MIGNANI, ADRIANA;BALLARIN, BARBARA;CASSANI, MARIA CRISTINA;
2015
Abstract
Indium Tin Oxide (ITO) substrates were functionalized with the following FAS: 2,2,3,3,4,4,5,5,6,6,6-undecafluoro-N-[3-(trimethoxysilyl)propyl]hexanamide (RF = C5F11), containing an embedded amide between the perfluoroalkyl chain and the syloxanic moiety, and the 3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyltriethoxysilane (RF = C6F13), with the perfluoroalkyl group linked to the syloxanic moiety through a simple hydrocarbon chain. Subsequently, the obtained systems were functionalized with Au nanoparticles (AuNPs) by immersion into a solution of citrate-stabilized AuNPs. All the samples have been characterized by FE-SEM and XPS. Moreover, the wetting behaviour, as well as the resistivity to a charge transfer of the different surfaces before and after AuNPs depositions, have been investigated. Finally, the application of such systems as catalysts for methanol electro-oxidation under alkaline conditions has been investigated, revealing the synergic role played by FAS and AuNPs in promoting a remarkable electrocatalytic activityI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
